Carbureter.



E. IVI. KRAMER..

QARBUHETER.V APPLlCATION FILED MAY 9 19H1'y Patented June 26, 1917.

HMO O O' Q0 .MII

UNITED smrnsprnnr OFFICE.

EMIL M. KRAMER, OF MORTON, ILLINOIS.

CARBUBETER.

To all whom t may concern:

Be it known that I, EMIL M. KRAimR, a citizen of the United States, residing at Morton, in the county of Tazewell and State of Illinois, have invented certain new and 'the proper quality of mixture for the engine while the quantity may vary to suit the power demands made upon the engine.

Another object of my invention is the provision of means whereby the relative movement of the fuel valve may be varied in its relationy to the movement of the air valve, these means being capable of opera tion from a distant point such as the driv ers seat of an automobile when the device is used in connection with such a machine.

Another object of my invention is to provide means whereby the incoming fuel is largely vaporized and entirely atomized before being mixed with the main supply of air on its way to the intake of the engine.

Other objects of my invention will appear and be described throughout the specification.

In the accompanying drawings:

Figure l is a central sectional side eleva tion of a carburetor embodyingzmy inven tion.

Fig. 2 is a sectional end elevation taken on the dotted line 2--2 of Fig. 1- looking in the direction of the arrows.

Fig. 3 is an enlarged sectional side elevation of the air and gas mixing valve.

The same reference characters are used to indicate identical parts in all the figures.

To show one form of construction in which my invention may be embodied I have illustrated a carbureter comprising a mixing chamber A, an admission chamber B and a valve containing portion C.

Arranged within the lower portion of th admission chamber B is the hollow mixing Y valve l whichl is supported by the hollow Specification of Letters Patent.

Application led Hay 9, 1916.

stem 2, guided in the housing rojecting downwardly from the upper wall of the admission chamber B. l The upper end of the hollow stem 2 is preferably internally screw threaded to receive a screw threaded stem 5 which is collar 6.

A helical spring 6 surrounds the stem 5 and bears against the collar 6 and the npper w'all of the admission chamber B, the spring 6 exerting its pressure to normally holdv the valve 1 approximately in theposition shown in Fig. 1.

The mixing valve 1 Ais preferably formed oi the body portion 7 (see Fig. 3) and the disk 8 which may be screwed into the lower portion of the body portion thereby forming a hollow structure, the vertical wall of which is provided with a series of perforations 9 which,`as clearly shown in Fig. 3 are tapered so that they are iarger at their exit end than they are at Vthe end in connection with the` interior of the hollow valve.

The valve l is preferably guided in its downward travel by a series of tapered portions 10 (see Fig. `2) whichare formed on the admission chamber B and extend into the mixing chamber A. l

. A throttle valve 11 provided with an oper ating arm or lever 12, is mounted in the mixing chamber A to control the quantity of mixture delivered to the engine.

The valve containing ortion C comprises in part the casing 13, *ig 1) and within the lower portion thereof, the tapered valve 14 is seated, the valve 14 controlling the ow of fuel from the fuel inlet chamber 15` A needle valve 16 is provided in the structure for the purpose of yregulating the maximum amount of fuel which may pass through the y device.

A chamber 17 is provided above the valve 14 and a passagelS leads from the cham--- ber 17 to a' tube 19 which latter communicatas with and projects into the hollow stem 2 of the valve l, a slot 20 being formed in the hollow stem 2 to permit the end of the tube 19 to project thereinto. The slot 20 is of suiicient length to permit the valve 1 and the stem 2 to move verticallv a sailicient distance, to accommodate the full range of the device. i

An air port 21 is formed through the guide 3 and a similar port 22 is hin-med through the hollow stem 2, these ports beingso arranged with relation vto each4 other` that when provided with an adjustable of a circle whose center the valve '1.moves downwardly from the position shown in Fig. 1, the ports will registerwith one another to an extent equal to the movement of the valve 1, thereby per- Initting a flow of air into the hollow stem v'2 and' therefrom to the interior of-the valve 1. The vertical alinement of the ports 21 and 22 is maintained by the tube 19, pre

,14 and, through the means of a slotted opening and a pin adjacent to its end 25, is conneoted to the upper end of the stein 5. The walking beam 23 is provided with an elongated arcuate opening 26 which is adapted to receive a sliding block 27 the latter being pivotally mounted on a movable arm 28 which is mounted upon the valve containing portion C.

A .controlling device 29 is connected to the block 27 and provides means by which the position of this blockvinay be shifted in the opening 26, which is formed as an arc j is the pivotal point of thev lever"2.8. r The operation of the device is as follows:

The parts as. shown in Fig. 1 are all in proper position when the engine to whichv the carbureter may be attached is at rest,

with Athe exception that the valve 1G is shown. closed.

4 Assuming that it is desired to start the Y engine, the valve 16 is opened and the engine y.rotated either by hand or other power thereby producing a suction on the under portion of the valve l by the creation of a partial va'cuum in the chamber A. The suction on the valve l causes it to move downwardly, thereby compresses the spring 6 and,

I'through the walking beam 23 and its connections lifting the valve 14 from its seat and permitting a flow of fuel into the passage 18, tube V19 and hollow stem 2 and also into the hollow valve 1, the port 22 moving down into partial registration with the port 21 admits air into the hollow stem 2 and this air is drawn down into the hollow valve and carries with it and vaporizes the fuel which enters the stem 2 through the tube 19.

The mixture thus formed passes out through the apertures 9 and between the guiding portions 10 and so into the chamber A from 'which it is delivered to the engine.

Should it be found that an insufficient amount of fuel is being admitted, the con` nection 29 may be operated thereby shifting the position of the block 27 with relation amount of vacuum in the chamber A.

Va greater or less quantity of mixture to the engine, the vacuum within the chamber A is increased or decreased proportionately and the valve 1 moves to a position in which the tension of the spring 6 just balances the amount of vacuum below the valve 1.

The tension of the spring 6 may be varied to any desired extent by the adjustable col lar 6 so that the valve 1 may becaused to assume'any desired position under any given It will be observed that the valve 1 is A not provided with any seat but itswithin the cylindrical lower portion of the admis sion chamber B in this manner 4peril'iitting the valve'l/1 to always properly seat itself to entirely stop the flow of fuel engine is not being operated.

The arrangement of the aperturesjis such that should any particles of solid 'mat ter enter these apertures from the inside of the valve 1, such particles will pass entirely Y through the apertures 9 and not becomelodged therein on account of the increasing diameter of these apertures as they approach the outer surfacev of the valve. y

It will be observed that as the valve 1,' moves downward within its guides 10;, an inwhen the creasing number ofthe apertures 9 is eX- posedto the suction produced by the engine, thereby` increasing the number of jets of mixture flowing into the chamber A and assisting in the maintenance of the ,proper quality of the mixture as the quantity is increased, the reverse being true namely that as the valve 1 rises within its guides, the number of apertures exposed to the suction produced by the engine is reduced thereby cutting off some of the jets of fuel.

Having thus fully described my invention, I claim:

1. In a carbureter, the combination of a mixing chamber, an air admission chamber, a hollow valve structure mounted therein, a fuel admission valve, connections between said fuel admission valve and said hollow .valve whereby when the latter is operated y the former is raised from its seat, a fuel duci.

leading from said fuel admission valve to the interior lof said hollow valve structure, means for admitting air into said hollow valve structure whereby when fuel is admitted thereto it will be vaporized therein by .a hollow valve structure mounted `therein and operated by ythe passage of air throughto the walking beam 23 whereupon the` -the device, aseries of discharge portsl openamount of fuel will be increased due to the' greater amount of lift of the valve 14.

As the throttle 11 is operated tol supply ing from the interior of said hollowl valve'. structure, tapered guidesbetween which said hollow valve structure moves :and for increasing or decreasing the number of operative discharge ports, a fuel admission valve operated by said hollow valve structure, and fuel and air passages leading into said hollow valve structure whereby the mixture is formed therein and discharged into said. mixing chamber.

3. In a carbureter, the combination of a mixing chamber, an air admission chamber, a hollow mixing valve mounted within the device and operated by the flow of air` therethrough, a fuel admission valve controlled in its position by the position of said hollow mixing valve, a fuel'ldondu/it leading from said admission valve to said hollow mixing valve for conveying fuel to the interior thereof, means for admitting air to the interior of said hollow mixing valve whereby the fuel and air admitted there-through are mixed therein, and means for normall holding said hollow mixing valve in suc position that said fuel admission valve is closed.

4. In a carhureter, .the combination of a mixing ehamber,'an' air 4admission chamber, a hollow mixing valve movably mounted in Vvthe device and operated b the flow of air there-through, a fuel admlssion valve, connections between said fuel admission'valve and said hollow mixing valve. whereby when the latter is moved by the passage of air through the device the former will be opened, a fuel conduit leading from said fuel admission valve to within saidhollow mixing valve, means for admitting air through said hollow mixing valve whereby when fuel is admitted ther'e-throu h a mixture will be produced therein, and means for changing the proportionate lift of said fuel admission valve when said hollow mixing valve is operated.

5. In a carbureter, the combination' of a mixing chamber, an air admission chamber in communication therewith, a hollow mexing valve for controlling the communiclvon between said chambers and adapted to be operated by the passa e of air from said latter-to said former c iambers, means for ad-I mitting fuel and airto said hollow mixing valve to form a mixture therein, means for discharging the mixture from the interior of said hollow mixing valve to said mixing chamber, means controlled by the position of said hollow mixing valve for varying the effectiveness of said discharging means, means for controlling the maximum amount of fuel admitted to the device, and means for shutting off a flow of fuel when the device is at rest. p

6. In a carbureter, the combination of a mixing chamber, an air admission chamber in communication therewith, a hollow mixing valve mounted within the structure and operated by the passage of air there-through, a fuel admission valve, connections between said fuel admission valve and said hollow mixing valve whereby when the latter is o erated by the passage of air through the dlgvice, the former will be o ened to permit a How of fuel,` a fuel con uit leading from' said fuel admission valve to within said hollow mixing valve, means for 'admitting air through said hollow mixing valve whereby when fuel is admitted thereinto a mixture will be formed therein, means foxT closing said fuel admission valve when said device is inoperative, means for varyin the proportionate amount of lift of .sai fuel admission valve, and means for controlling the maximum amount of fuel admitted t0 the device.

In testimony whereof I aiiixmsi tum.

EMIL M. K R. 

